Increase in Salicylic Acid at the Onset of Systemic Acquired Resistance in Cucumber

J. P. Métraux, H. Signer, J. Ryals, E. Ward, M. Wyss-Benz, J. Gaudin, K. Raschdorf, E. Schmid, W. Blum, B. Inverardi

doi:10.1126/science.250.4983.1004

Increase in Salicylic Acid at the Onset of Systemic Acquired Resistance in Cucumber

DOI Web Site 被引用文献39件

J. P. Métraux

Agricultural Division, CIBA-GEIGY Limited, 4002 Basel, Switzerland
H. Signer

Agricultural Division, CIBA-GEIGY Limited, 4002 Basel, Switzerland
J. Ryals

Agricultural Biotechnology Research Unit, CIBA-GEIGY Corporation, Research Triangle Park, NC 27709
E. Ward

Agricultural Biotechnology Research Unit, CIBA-GEIGY Corporation, Research Triangle Park, NC 27709
M. Wyss-Benz

Agricultural Division, CIBA-GEIGY Limited, 4002 Basel, Switzerland
J. Gaudin

Agricultural Division, CIBA-GEIGY Limited, 4002 Basel, Switzerland
K. Raschdorf

Agricultural Biotechnology Research Unit, CIBA-GEIGY Corporation, Research Triangle Park, NC 27709
E. Schmid

Central Research, CIBA-GEIGY AG, 4002 Basel, Switzerland
W. Blum

Central Research, CIBA-GEIGY AG, 4002 Basel, Switzerland
B. Inverardi

Central Research, CIBA-GEIGY AG, 4002 Basel, Switzerland

抄録

<jats:p> In an effort to identify the signal compound that mediates systemic acquired resistance (SAR), changes in the content of phloem sap were monitored in cucumber plants inoculated with either tobacco necrosis virus or the fungal pathogen <jats:italic>Colletotrichum lagenarium</jats:italic> . The concentration of a fluorescent metabolite was observed to increase transiently after inoculation, with a peak reached before SAR was detected. The compound was purified and identified by gas chromatography-mass spectrometry as salicylic acid, a known exogenous inducer of resistance. The data suggest that salicylic acid could function as the endogenous signal in the transmission of SAR in cucumber. </jats:p>